Kalor Redonda Glass 12DThe Kalor Redonda Glass 12D is a 12kW Ductable Air Stove, similar to a standard Air Stove but some of the heat produced can be "ducted" to another room via a simple duct at the rear of the stove. The Kalor Redonda Glass 12D has a beautiful, curved design that offers a more modern look and would compliment many contemporary, interior designs. The Redonda Glass models are available in three colours (see below) and offer superb efficiency of almost 93%.